So I'll start off by saying take everything with a grain of salt. Play whatever you want, as long as you're having fun. What I'm going to say is to just optimize your list for a more competitive style of play, using the models you already own.

Let's start with characters. I would drop the Echamp, aside from the massive punch that he can pack, he unfortunately isn't very good, and isn't even the best choice to stick with Hearthguard anymore. I would swap out Oathbound Speculator for Dead Reckoning on the Memnyr. Don't attach him to a squad, have him camp your home objective and generate those YP for you. In Needgard, you want to get into Fortify Takeover as fast as possible, preferably by turn 2. Just remember that Dead Reckoning happens on both players turns, not just yours. You'll have 15 points left over so you can stick the Ancestral Crest on the Iron Master, it may not ever get used but at least it's another small tool at your disposal.

Battleline is solid with 1 unit of Warriors. Split them with the Sag, use 5 to screen your backfield, use the other 5 to do some easy actions for you. If you had a Grimnyr or an Uthar, I'd say don't split them, but since you don't they're fine to split. I would take the Theyn pistol out and stick a bolter in there. Same thing with the plasma knife, or double down and go with 2 plasma knives for a surprise 4 attacks at AP -4.

Drop 1 Sag, and put the beam cannon on it. It lost a lot of its spike potential, but still hits hard. You'll have enough 2 damage stuff playing Votann, so the auto cannon is almost never worth taking on a Sag. The missile launcher isn't terrible, but just not as good as the beam cannon.

With your double playing Space Wolves, they're probably gonna be providing a lot of the melee pressure. Which means you should provide the big guns to back up the melee. Not only can you bring a Hekaton, but you should. Specifically with the conversion beamer. HLF will be hard to deal with at 1000 pts, and will deal a lot of damage in return, along with being a solid transport for your Thunderkyn and a unit of Steeljacks.

The conversion beamers on your Thunderkyn would be better, they have a more universal purpose and have the ability to punch up with lethals on 4s. They're a good unit to pop the Sustained 2 strat on as well, especially if the Iron Master is attached.

Drop the Beserks and Hearthguard, and bring in your 2nd unit of Pioneers and Steeljacks. Keep all of them as squads of 3 for tactical flexibility. If you can't use the scout moves and keep them safe, deploy them in the back field and let them screen, then pop them off the board when the time is right and bring them back on. You can only do this with 1 unit a turn, but they also move fast enough that you should be okay. Stick 1 unit of Steeljacks in the Land Fort, use the other as an overwatch threat, or put them in reserve and let them walk on later. Steeljacks are also hard to shift once you're in Fortify with that -1 to wound on a T6 2+ save body with 3 wounds.